Malicious PDF — malware analysis report

Static analysis result for SHA-256 3216214cec212671…

MALICIOUS

PDF

33.1 KB Created: 2021-07-05 22:42:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a0d0e3a7dcfad3adb1dbd1a87faa769d SHA-1: 1b36da0fe63bda705184c13f118cea9bda2f0d0e SHA-256: 3216214cec212671e6230e6461e9525ae5866f144bbe436787f37547f88883f1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency ('Getrobux Ninja') and links to external websites that likely host malicious content or further phishing attempts. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with game hacks and generators, a common social engineering tactic. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/getrobux-ninja-game-hack PDF link annotation
    • https://tnupacktour.com.tw/image/data/files/roblox-present-free_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-free-tshirts_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-god-mode-hack_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-hack-roblox-acccounts-2021_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://tnupacktour.com.tw/image/data/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5B 21588 bytes
SHA-256: 0253a2ee4700135f732a9488f3096925b2807a491e4362ffabfd5e2e276c32cc
font_01_sfnt_off00005c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 18964 bytes
SHA-256: 28a938f71f21ecba601be87e6e46cbc24175fc465f21a293bfe527fb107dd2a7

Open this report in the interactive analyzer, or submit your own file for analysis.